For example, if you send signal SIGSTOP to a process, the process suspends.
例如，如果您将信号SIGSTOP发送到某个进程，该进程将挂起。
After sending SIGSTOP, the process changed state, becoming suspended or stopped.
在发送SIGSTOP之后，该进程会改变状态，变为挂起或停止。
Special signals like SIGSTOP would have to be handled by the kernel and for all threads.
SIGSTOP等专用信号必须由内核来为所有线程处理。
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